Poly(AN-co-PEGMA)/hBN/NaClO4 composite electrolytes for sodium ion battery

Abstract

Polymer electrolytes composed of an acrylonitrile and polyethylene glycol methacrylate copolymer poly(AN-co-PEGMA) with addition of NaClO4 are studied by impedance spectroscopy, differential scanning calorimetry (DSC), fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). Hexagonal boron nitride (hBN) particles are having increasing interest owing to mechanical properties, thermal stability, chemical stability and good lubrication property. In this study, hBN was used as an inorganic filler. FTIR spectroscopy was used to examine the interactions between the host polymer and both NaClO4 salt and nano hBN particles. The thermal properties of the composites were studied using TGA and DSC tests. TGA results showed that all the composites membranes were thermally stable till 300°C with one step degradation. Surface morphology of the films was examined with SEM which also reveals the homogeneous dispersion of nano hBN in the polymer matrix. Ionic conductivity was studied with impedance spectroscopy, the results showed that the ionic conductivity increases with increasing PEGMA ratio. ANcoPEGMA 11 20Na (EO:Na ratio=20) sample showed maximum ion conductivity of approximately 3.6×10−4 S cm−1 at 100°C. This is because ANcoPEGMA 11 20Na has highest percentage of PEGMA and highest number of Na+ ion per EO groups.

Influence of the Poly(ethylene Glycol) Methyl Ether Methacrylates on the Selected Physicochemical Properties of Thermally Sensitive Polymeric Particles for Controlled Drug Delivery

“…Characteristic bands in the spectra of five PEGMEMs macromonomers were seen at about 2868 cm −1 —stretching and bending vibration of C-H in methylene group; at 1716 cm −1 —stretching vibrations of C=O in the carboxylic ester group; at 1638 cm −1 —stretching vibration of the C=C double bond; at 1296 and 1100 cm −1 —symmetric and asymmetric stretching vibrations of carboxylic ester C-O-C; at 841 and 655 cm −1 —out of plane bending vibration of the C=C-H group [ 56 , 57 , 58 , 59 , 60 ].…”

Molecular Engineering of Ionic Transition Metal Complexes and Counterions for Efficient Flexible Green Light-Emitting Electrochemical Cells

“…, [(LiTFSI), LiN­(CF 3 SO 2 ) 2 ]-based polymer electrolytes usually exhibit average ion conductivities ( e.g. , >10 –5 S cm –1 ) higher than those of other electrolytes due to their low lattice energy and the delocalization of negative charge. , Therefore, the chemical and electrical features of LiTFSI may be potentially valuable for the design of efficient LECs with low turn-on voltages. Sodium perchlorate (NaClO 4 ), which is widely used in several polymer electrolytes for Na-ion batteries. , Moreover, it has been proposed as a cheap salt for the formulation of supercapacitor electrolytes, , including highly conductive water/organic hybrid ones . To the best of our knowledge, the use of NaClO 4 in iTMC-LECs as an additive has not been reported yet. Tetrabutylammonium perchlorate (TBAP), which typically serves as the supporting electrolyte for cyclic voltammetry (CV) experiments. , The high ion mobilities of TBAP-based electrolytes, the electrochemical stability, and the large cation of TBAP make such salt an excellent electrolyte model to be studied as additive for LEC emissive layers.…”

“…(ii) Sodium perchlorate (NaClO 4 ), which is widely used in several polymer electrolytes for Na-ion batteries. 62,63 Moreover, it has been proposed as a cheap salt for the formulation of supercapacitor electrolytes, 64,65 including highly conductive water/organic hybrid ones. 66 To the best of our knowledge, the use of NaClO 4 in iTMC-LECs as an additive has not been reported yet.…”

Polymer composite electrolyte of SPSU(Na)/PPEGMA/hBN for sodium-ion batteries

“…2 Rechargeable lithium (Li)-ion batteries (LIBs), comprising of Li-ion conducting electrolyte and two Li insertion electrodes, have become prospering and sophisticated energy storage devices since the first commercialization of LIB (carbon/LiCoO2 cell) in 1991. 3 Li-based electrochemistry provides various attractive attributes: Li is the lightest metal with an exceptionally low redox potential (Li + /Li = −3:04 V vs standard hydrogen electrode), 4 this makes the cells having high energy density and voltage. Moreover, Li ion has a very small ionic radius which is advantageous for easy diffusion into materials.…”